Castrol GTX is one of the world’s most trusted engine oils. It protects against problems that your engine faces everyday.
Castrol GTX is one of the world’s most trusted engine oils. It’s more than just oil. It’s liquid engineering that protects against problems, like sludge, that your engine faces every day.
The Double Action formula of Castrol GTX cleans away old sludge* while protecting against new sludge formation, better than tough industry standards.
Learn more about the range of GTX engine oils available and find the right product for your vehicle.
Get an insider view on how we tested the product in world class facilities for 100,000 miles to prove GTX ULTRACLEAN keeps engines clean and prevents sludge formation.